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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Immunocytochemical identification of spore proteins in two microsporidia, with emphasis on extrusion apparatus.

Microsporidia can form small spores with a unique invasive apparatus featuring a long polar tube whose extrusion allows entry of infectious sporoplasm into a host cell. The reactivity of mouse polyclonal antibodies raised against sporal proteins from two microsporidian species belonging to different genera (Glugea atherinae and Encephalitozoon cuniculi) was studied by western blotting and indirect immunofluorescence. Whole protein antisera provided a few cross-reactions relatable to some proteins of the spore envelope or polar tube. Ultrastructural immunocytochemistry with murine antibodies against protein bands separated by sodium dodecylsulphate polyacrylamide gel electrophoresis allowed the assignment of several proteins to the polar tube (34, 75 and 170 kDa in Glugea, 35, 55 and 150 kDa in Encephalitozoon). Antigenic similarities were detected for the Glugea 34 kDa and Encephalitozoon 35 kDa polar tube proteins. Species-specific proteins were shown to be located in either the lamellar polaroplast of Glugea or the spore envelope of Encephalitozoon.[1]

References

  1. Immunocytochemical identification of spore proteins in two microsporidia, with emphasis on extrusion apparatus. Delbac, F., Duffieux, F., David, D., Metenier, G., Vivares, C.P. J. Eukaryot. Microbiol. (1998) [Pubmed]
 
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